I have no idea whether this is real, nor do I know how the concentration compares with that used in the study, but https://www.nanominerals.co.uk/products/the-health-factory-n... advertises it as a supplement (not as a medicine) for $40/ half liter.

(The ad also claims that the water their iron is suspended in is "energized", which makes the rest of the ad seem...questionable.)